Hi mkk!
Here are the info for your requests:
Is the uplink to the core stable again when you shutdown both APs ?
- The problems are random ( We monitor the up/down by ping every 30s and see the problems auto resovled in ~2 minutes ). If we shutdown both APs , the users cannot connect to our site to work because most of them is using mobile devices. ( We maybe consider it if the situation is worse )
- Start troubleshooting from the lowerst ISO layer up.
What is your ArubaOS instant release version?
ARUBA83-c5:ba:9a# show version
Aruba Operating System Software.
ArubaOS (MODEL: 325), Version 8.4.0.5
Website: http://www.arubanetworks.com
(c) Copyright 2019 Hewlett Packard Enterprise Development LP.
Compiled on 2019-10-22 at 12:32:12 UTC (build 72830) by p4build
FIPS Mode :disabled
AP uptime is 6 days 18 hours 40 minutes 23 seconds
Reboot Time and Cause: AP rebooted Tue Dec 24 00:43:08 UTC 2019; System cmd at uptime 33D 15H 29M 33S: Image Upgrade Successful
ARUBA80-ce:13:e2# show version
Aruba Operating System Software.
ArubaOS (MODEL: 215), Version 8.4.0.5
Website: http://www.arubanetworks.com
(c) Copyright 2019 Hewlett Packard Enterprise Development LP.
Compiled on 2019-10-22 at 13:00:19 UTC (build 72830) by p4build
FIPS Mode :disabled
AP uptime is 6 hours 11 minutes 41 seconds
Reboot Time and Cause: AP rebooted Mon Dec 30 13:11:09 UTC 2019; System cmd at uptime 1D 1H 20M 44S: master transitioned to local (new master 10.10.10.83, uplink flaps 0, max beacon miss 21), uptime from being master 29 seconds.
What is your switch type and firmware version?
CORE SPINE ( Dell S6000-ON - Cumulus 3.3.2 ) <-> Leaf216 Switch ( N1524-Firmware 6.3.2.4 ) ( Port7-ARUBA80 )
<-> Leaf218 Switch ( N1548-Firmware 6.3.2.4 ) ( Port17-ARUBA83 )
How is it connected to the coreswitch, LACP link aggregation or not?
Leaf216 - No Aggregation
Leaf218 - LACP Link aggreation with two ten gigabitethernet uplink
Is spanning-tree enabled?
Yes the spanning tree is enabled and configure to RSTP mode.
can you share the edgeswitch loggiing "show logging -r".?
The log is very long so i upload as file for you investigate.
can you share the uplink interface statistics "show interface #.?
leaf216#show interfaces tengigabitethernet 1/0/3
Interface Name................................. Te1/0/3
SOC Hardware Info.............................. BCM56150_A0
Link Status.................................... Up /None
Keepalive Enabled.............................. FALSE
Err-disable Cause.............................. None
VLAN Membership Mode........................... Trunk Mode
VLAN Membership................................ (1),2-4096
MTU Size....................................... 1518
Port Mode [Duplex]............................. Full
Port Speed..................................... 10000
Link Debounce Flaps............................ 0
Auto-Negotation Status......................... Off
Burned MAC Address............................. E4F0.047A.D8BC
L3 MAC Address................................. E4F0.047A.D8BD
Sample Load Interval........................... 300
Received Input Rate Bits/Sec................... 438544
Received Input Rate Packets/Sec................ 483
Transmitted Input Rate Bits/Sec................ 1079648
Transmitted Input Rate Packets/Sec : .......... 226
Total Packets Received Without Errors.......... 10797877379
Unicast Packets Received....................... 6185770825
Multicast Packets Received..................... 657183560
Broadcast Packets Received..................... 3954922994
Total Packets Received with MAC Errors......... 0
Jabbers Received............................... 0
Fragments/Undersize Received................... 0
Alignment Errors............................... 0
FCS Errors..................................... 0
Overruns....................................... 0
Total Received Packets Not Forwarded........... 1756007234
Total Packets Transmitted Successfully......... 3781030834
Unicast Packets Transmitted.................... 3767233192
Multicast Packets Transmitted.................. 4521176
Broadcast Packets Transmitted.................. 9276466
Transmit Packets Discarded..................... 0
Total Transmit Errors.......................... 0
Total Transmit Packets Discarded............... 0
Single Collision Frames........................ 0
Multiple Collision Frames...................... 0
Excessive Collision Frames..................... 0
leaf216#show interfaces gigabitethernet 1/0/7
Interface Name................................. Gi1/0/7
SOC Hardware Info.............................. BCM56150_A0
Link Status.................................... Up /None
Keepalive Enabled.............................. FALSE
Err-disable Cause.............................. None
VLAN Membership Mode........................... Trunk Mode
VLAN Membership................................ (10),1-9,11-4096
MTU Size....................................... 1518
Port Mode [Duplex]............................. Full
Port Speed..................................... 1000
Link Debounce Flaps............................ 0
Auto-Negotation Status......................... Auto
Burned MAC Address............................. E4F0.047A.D8BC
L3 MAC Address................................. E4F0.047A.D8BD
Sample Load Interval........................... 300
Received Input Rate Bits/Sec................... 1039136
Received Input Rate Packets/Sec................ 212
Transmitted Input Rate Bits/Sec................ 376544
Transmitted Input Rate Packets/Sec : .......... 379
Total Packets Received Without Errors.......... 2426485149
Unicast Packets Received....................... 2421299835
Multicast Packets Received..................... 2108437
Broadcast Packets Received..................... 3076877
Total Packets Received with MAC Errors......... 0
Jabbers Received............................... 0
Fragments/Undersize Received................... 0
Alignment Errors............................... 0
FCS Errors..................................... 0
Overruns....................................... 0
Total Received Packets Not Forwarded........... 91212
Total Packets Transmitted Successfully......... 3304052445
Unicast Packets Transmitted.................... 2538011770
Multicast Packets Transmitted.................. 43090035
Broadcast Packets Transmitted.................. 722950640
Transmit Packets Discarded..................... 345244
Total Transmit Errors.......................... 0
Total Transmit Packets Discarded............... 345244
Single Collision Frames........................ 0
Multiple Collision Frames...................... 0
Excessive Collision Frames..................... 0
leaf218#show interfaces gigabitethernet 1/0/17
Interface Name................................. Gi1/0/17
SOC Hardware Info.............................. BCM56150_A0
Link Status.................................... Up /None
Keepalive Enabled.............................. FALSE
Err-disable Cause.............................. None
VLAN Membership Mode........................... Trunk Mode
VLAN Membership................................ (10),1-9,11-4096
MTU Size....................................... 1518
Port Mode [Duplex]............................. Full
Port Speed..................................... 100
Link Debounce Flaps............................ 0
Auto-Negotation Status......................... Auto
Burned MAC Address............................. E4F0.04D8.9314
L3 MAC Address................................. E4F0.04D8.9315
Sample Load Interval........................... 300
Received Input Rate Bits/Sec................... 2844280
Received Input Rate Packets/Sec................ 507
Transmitted Input Rate Bits/Sec................ 385720
Transmitted Input Rate Packets/Sec : .......... 519
Total Packets Received Without Errors.......... 1328243746
Unicast Packets Received....................... 1321948708
Multicast Packets Received..................... 995783
Broadcast Packets Received..................... 5299255
Total Packets Received with MAC Errors......... 109
Jabbers Received............................... 0
Fragments/Undersize Received................... 0
Alignment Errors............................... 0
FCS Errors..................................... 0
Overruns....................................... 0
Total Received Packets Not Forwarded........... 36336
Total Packets Transmitted Successfully......... 1714509842
Unicast Packets Transmitted.................... 1216567650
Multicast Packets Transmitted.................. 82898299
Broadcast Packets Transmitted.................. 415043893
Transmit Packets Discarded..................... 480562
Total Transmit Errors.......................... 0
Total Transmit Packets Discarded............... 480562
Single Collision Frames........................ 0
Multiple Collision Frames...................... 0
Excessive Collision Frames..................... 0
First thing i think about is you probaly create some mesh point between both APs. Take also a look at this topic https://community.arubanetworks.com/t5/Controllerless-Networks/IAP-315-STP-Blocked/td-p/440040
Thank for your sharing info with me, i will look at it. Thanks!